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P-state software coordination for ACPI core

Browse source 
http://bugzilla.kernel.org/show_bug.cgi?id=5737

Signed-off-by: Venkatesh Pallipadi <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Venkatesh Pallipadi 2005-12-14 15:05:00 -05:00 • committed by Len Brown
commit 3b2d99429e
3 changed files with 258 additions and 1 deletions
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27
include/acpi/processor.h
View file

@ -3,6 +3,7 @@
#include <linux/kernel.h>
#include <linux/config.h>
#include <linux/cpu.h>
#include <asm/acpi.h>
@ -18,6 +19,17 @@
#define ACPI_PDC_REVISION_ID 0x1
#define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
#define ACPI_PSD_REV0_ENTRIES 5
/*
* Types of coordination defined in ACPI 3.0. Same macros can be used across
* P, C and T states
*/
#define DOMAIN_COORD_TYPE_SW_ALL 0xfc
#define DOMAIN_COORD_TYPE_SW_ANY 0xfd
#define DOMAIN_COORD_TYPE_HW_ALL 0xfe
/* Power Management */
struct acpi_processor_cx;
@ -66,6 +78,14 @@ struct acpi_processor_power {
/* Performance Management */
struct acpi_psd_package {
acpi_integer num_entries;
acpi_integer revision;
acpi_integer domain;
acpi_integer coord_type;
acpi_integer num_processors;
} __attribute__ ((packed));
struct acpi_pct_register {
u8 descriptor;
u16 length;
@ -92,7 +112,9 @@ struct acpi_processor_performance {
struct acpi_pct_register status_register;
unsigned int state_count;
struct acpi_processor_px *states;
struct acpi_psd_package domain_info;
cpumask_t shared_cpu_map;
unsigned int shared_type;
};
/* Throttling Control */
@ -161,6 +183,9 @@ struct acpi_processor_errata {
} piix4;
};
extern int acpi_processor_preregister_performance(
struct acpi_processor_performance **performance);
extern int acpi_processor_register_performance(struct acpi_processor_performance
*performance, unsigned int cpu);
extern void acpi_processor_unregister_performance(struct